Insights into the Synergistic Promotion Effect of Cu and W Modification on the Catalytic Performance of α-FeO for NH-SCR of NO.

A dual-element modification strategy was proposed to promote the catalytic performance of the α-FeO catalyst for the selective catalytic reduction of NO by NH (NH-SCR of NO) at both low and high temperatures. By optimizing the loading amount of CuO (4 wt %) and WO (5 wt %), a wide operating temperature window (150-350 °C) was achieved on the modified α-FeO catalyst (W/Cu/Fe). Further characterizations revealed that the enhanced low-temperature activity could be attributed to the improved redox performance of α-FeO through CuO modification, while the superior high-temperature activity was primarily ascribed to the enhanced surface acidity induced by WO modification.

Different morphologies on Cu-Ce/TiO catalysts for the selective catalytic reduction of NO with NH and DRIFTS study on sol-gel nanoparticles.

The copper-cerium binary oxide catalysts supported by titanium dioxide with nanosphere core-shell structures, nanotube (TNT) core-shell structures, impregnation (imp) nanoparticles and sol-gel nanoparticles were prepared for NH-SCR of NO under medium-low temperature conditions. The effect of different morphologies on the Cu-Ce/TiO catalysts was comprehensively studied through physicochemical characterization. The results showed that the sol-gel nanoparticles exhibited 100% NO reduction efficiency in the temperature range of 180-400 °C.